Name: erR10175 Date: 10/22/2003



  The method javax.xml.datatype.Duration.equals(Object rhs) does not detect
equality of very long durations. For example:
    new Duration("P100000000000000000000D"),
  new Duration("PT2400000000000000000000H").

The documentation of the method 'equals' reads:
"Duration X is equal to Y if and only if time instant t+X and t+Y are the same for
all the test time instants specified in the section 3.2.6.2 of the XML Schema 1.0
specification."

As every day contains exactly 24 hours, every x*24 hours duration equals to x days
duration. Particularly, it hold for x = 100000000000000000000 = 1e20.

This bug affects new test in JCK 1.5 (not yet integrated)
   api/javax_xml/datatype/Duration/index.html#DurationTests[Ctor008]

To reproduce the bug compile and run the following code as shown
in the log below:
------------------------------ test.java
import javax.xml.datatype.Duration;

public class test {
    public static void main(String [] args) {
        Duration d1 = new Duration("P100000000000000000000D");
        Duration d2 = new Duration("PT2400000000000000000000H");
        System.out.println("d1 = " + d1
            + ", d1.days = " + d1.getField(Duration.DAYS)
            + ", d1.hours = " + d1.getField(Duration.HOURS));
        System.out.println("d2 = "
            + d2 + ", d2.days = " + d2.getField(Duration.DAYS)
            + ", d2.hours = " + d2.getField(Duration.HOURS));
        System.out.println("d1.equals(d2) = " + d1.equals(d2));
    }
}
----------------------------------------------------

------------------------------------------------ log
$javac test.java
$java -cp . -showversion test
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b24)
Java HotSpot(TM) Server VM (build 1.5.0-beta-b24, mixed mode)

d1 = P100000000000000000000D, d1.days = 100000000000000000000, d1.hours = null
d2 = PT2400000000000000000000H, d2.days = null, d2.hours = 2400000000000000000000
d1.equals(d2) = false
----------------------------------------------------

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